Finding the Fourth Proportional to 67,730.10, 101,422.35 and 53,906.10

Step by Step Solution

1. Step 1: Write the proportion equation
   67,730.10 : 101,422.35 = 53,906.10 : x
2. Step 2: Convert to fraction form
   67,730.10/101,422.35 = 53,906.10/x
3. Step 3: Cross multiply
   67,730.10x = 101,422.35 × 53,906.10
4. Step 4: Simplify right side
   67,730.10x = 5,467,283,341.34
5. Step 5: Solve for x
   x = 5,467,283,341.34/67,730.10
6. Step 6: Final answer
   x = 80,721.62